1. Department of Otolaryngology-Head and Neck Surgery; Northwestern University Feinberg School of Medicine; Chicago Illinois U.S.A.
2. Department of Otolaryngology, Division of Thyroid and Parathyroid Surgery; Massachusetts Eye and Ear, Harvard Medical School; Boston Massachusetts U.S.A.
3. Department of Otorhinolaryngology; Kaohsiung Municipal Hsiao-Kang Hospital, Kaohsiung Medical University Hospital, Kaohsiung Medical University; Kaohsiung Taiwan
4. Department of Otolaryngology-Head and Neck Surgery; Kaohsiung Medical University Hospital, Kaohsiung Medical University; Kaohsiung Taiwan
5. Department of Otolaryngology; Cleveland Clinic; Cleveland Ohio U.S.A.
6. Department of Endocrine Surgery; Jagiellonian University Medical College, Third Chair of General Surgery; Krakow Poland
7. Department of General Surgery; University Hospital Halle; Halle/Saale Germany
8. Onze-Lieve-Vrouw Hospital Aalst; Aalst Belgium
9. Department of General, Visceral, and Vascular Surgery; Martin Luther University Halle-Wittenberg; Halle Germany
10. Division for Endocrine Surgery, Department of Human Pathology in Adulthood and Childhood “G. Barresi”; University Hospital G. Martino, University of Messina; Messina Italy
11. Division of Surgical Oncology, Endocrine Surgery Service, Department of Surgery; Massachusetts General Hospital, Division of Surgical Oncology, Endocrine Surgery Service; Boston Massachusetts U.S.A.